Les 40 Bosses

Races similar to Les 40 Bosses

Les 40 BossesTrailAdvanced120kmD+ 5,500mÎle-de-France

Les 40 Bosses is a advanced trail race with up to 120km and 5,500m of elevation gain. We've analyzed 10 races using 7 similarity metrics — terrain type, difficulty, distance, elevation, location, season and tags — to find the best alternatives. The closest match is EcoTrail Paris with a 75% similarity score.

Our recommendation

If you're looking for the most similar experience to Les 40 Bosses, we recommend EcoTrail Paris as the top match.

Similarity ranking

The 10 most similar races to Les 40 Bosses, ranked by overall affinity.

1
EcoTrail Paris

Rambouillet · Île-de-France

75%
TrailIntermediate120kmD+ 2,000m
Why are they similar?
TerrainBoth are trail races
DifficultyAdvanced vs Intermediate
Distance120km vs 120km (very similar)
Location51km apart, same region area
SeasonDecember vs March
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2
SaintéLyon

Saint-Étienne · Auvergne-Rhône-Alpes

73%
TrailAdvanced160kmD+ 4,200m
Why are they similar?
TerrainBoth are trail races
DifficultySame difficulty level: Advanced
Distance120km vs 160km (different range)
Location429km apart
SeasonDecember vs November
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3
Costa Brava Stage Run

Blanes · Catalonia

71%
TrailAdvanced125kmD+ 4,820m
Why are they similar?
TerrainBoth are trail races
DifficultySame difficulty level: Advanced
Distance120km vs 125km (comparable)
Location817km apart
SeasonDecember vs April
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4
67%
TrailAdvanced103kmD+ 2,881m
Why are they similar?
TerrainBoth are trail races
DifficultySame difficulty level: Advanced
Distance120km vs 103km (comparable)
Location784km apart
SeasonDecember vs April
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5
Grand Raid Ventoux by UTMB

Malaucène · Provence-Alpes-Côte d'Azur

67%
Ultra TrailAdvanced125kmD+ 5,700m
Why are they similar?
TerrainTrail vs Ultra Trail
DifficultySame difficulty level: Advanced
Distance120km vs 125km (comparable)
Location582km apart
SeasonDecember vs April
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6
Trail du Saint-Jacques by UTMB

Le Puy-en-Velay · Auvergne-Rhône-Alpes

64%
TrailIntermediate139kmD+ 6,000m
Why are they similar?
TerrainBoth are trail races
DifficultyAdvanced vs Intermediate
Distance120km vs 139km (comparable)
Location459km apart
SeasonDecember vs June
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7
90K Camino de la Cruz

Caravaca de la Cruz, Murcia · Region of Murcia

63%
TrailAdvanced91kmD+ 2,500m
Why are they similar?
TerrainBoth are trail races
DifficultySame difficulty level: Advanced
Distance120km vs 91km (different range)
Location1257km apart
SeasonDecember vs October
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8
Trail de Noël d'Ollioules

Ollioules · Provence-Alpes-Côte d'Azur

63%
TrailAdvanced33kmD+ 2,250m
Why are they similar?
TerrainBoth are trail races
DifficultySame difficulty level: Advanced
Distance120km vs 33km (different range)
Location710km apart
SeasonBoth in December
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9
Trail des Passerelles du Monteynard

Treffort · Auvergne-Rhône-Alpes

62%
TrailAdvanced63kmD+ 3,100m
Why are they similar?
TerrainBoth are trail races
DifficultySame difficulty level: Advanced
Distance120km vs 63km (different range)
Location525km apart
SeasonDecember vs July
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10
Festival des Templiers

Millau · Occitania

61%
Ultra TrailAdvanced100kmD+ 4,309m
Why are they similar?
TerrainTrail vs Ultra Trail
DifficultySame difficulty level: Advanced
Distance120km vs 100km (different range)
Location550km apart
SeasonDecember vs October
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In the same region

Same difficulty

Same terrain type

Same season

Frequently asked questions

How is race similarity calculated?
We use an algorithm with 7 weighted metrics: terrain affinity (25%), difficulty (20%), max distance (15%), shared tags (15%), elevation gain (10%), geographical proximity (10%) and season (5%). Each metric produces a 0-1 score that is weighted to obtain the final percentage.
What is this page for?
If you already know a race and enjoyed it, here you'll find others with similar characteristics. It's ideal for planning your race calendar or finding alternatives if your favourite race is sold out.
Is the Pack 360 the same for similar races?
Races with high similarity often share equipment needs, but each has its own specific requirements for mandatory gear, accommodation and logistics. Check each race's Pack 360 to be fully prepared.

Distances among these 10 alternatives range from 33km to 160km. 1 take place in the same region as Les 40 Bosses. 8 share its terrain type. 8 match its difficulty level. 2 fall in a similar season.